4 materials
Preload critical assets to improve loading speed

Optimize web page performance by preloading assets before the browser discovers them.

CSS Utility Classes and “Separation of Concerns”

A good point on separation of styles from the creator of Tailwind CSS framework.

Google HTML/CSS Style Guide

Document defines formatting and style rules for HTML and CSS. It aims at improving collaboration, code quality, and enabling supporting infrastructure.

How to Favicon in 2021

How to prepare favicons for most popular usecases.